Unsigned; 
         1001 1110
	 x	  110
          00000000
        100111100
      1001111000      
    1110110100 (INVALID)
         1111         (carry)

Signed;
         1001 1110
	 x	  110
          00000000
        100111100
      1001111000          
    1110110100 (VALID)
       1111         (carry)